You will receive a notification when your child has marked the task as done. Under the ‘Earn’ screen, you can see the tasks they have completed for the week under the ‘Done’ title. If you click on the task, the task description screen will show it as done.
Your kid(s) will receive their payment for tasks marked as done on Saturday. Make sure they mark the tasks as done by Friday night (11:59pm) or they will not receive their money on Pay Day!